. "Psionic blade"@en . . . . "Psi-blades are incandescent, and are usually of a blue-white color. Psi-blades can cut through any material regardless of density, though can be parried by other psi-blades and warp blades. Over time, the Khalai have further refined psi-blade focuser construction, allowing psi-blades to increase in power as a zealot\u2019s fury mounts in the heat of battle. The Dark Templar have further refined psi blades into much more powerful warp blades. After the severing of his nerve cords, Artanis demonstrated the ability to wield a psi-blade and warp blade in tandem."@en . . . "Psi-blades are incandescent, and are usually of a blue-white color. Psi-blades can cut through any material regardless of density, though can be parried by other psi-blades and warp blades. Over time, the Khalai have further refined psi-blade focuser construction, allowing psi-blades to increase in power as a zealot\u2019s fury mounts in the heat of battle. The Dark Templar have further refined psi blades into much more powerful warp blades. After the severing of his nerve cords, Artanis demonstrated the ability to wield a psi-blade and warp blade in tandem. After the fall of Aiur, some Khalai protoss adopted the way of the Nerazim and returned to the planet to wage a secret war against the zerg. These avengers wield psionic scythes, modified versions of psionic blades. The Zhakul Guardians manifested green psi-blades while under the control of Maar. The Purifiers' psionic blades vary in color. The sentinels from the purifier revival program that were brought online by Karax via the Glacius technology vault were of a blue-white color, while those of the original purifiers aboard Cybros were of a yellow color. The sentinels that accompanied Karax in the final defense of the Xel'Naga Keystone against Amon's zerg forces and the corrupted Golden Armada were of a yellow orange color. The Tal'darim possess red psi-blades, referred to as bane blades, which are pure Void energy drawn from Amon's realm. Ancient Tal'darim legends speak of masters who could use them to tear planets in half. Khalai protoss possessed by Amon, including Artanis and Selendis, were able to manifest red psi-blades, as could Emil Narud. The Tal'darim under Narud's command at Skygeirr Station wielded psi-blades of a blue-white color though, as did the Tal'darim under Executor Nyon."@en . .